From: Bruce Richardson <bruce.richardson@intel.com>
To: Karthikraj palanichamy <karthikraj.palanichamy@veryxtech.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] I350 jumbo frame transmission
Date: Wed, 12 Apr 2017 14:01:41 +0100 [thread overview]
Message-ID: <20170412130141.GA33412@bricha3-MOBL3.ger.corp.intel.com> (raw)
In-Reply-To: <58EE22B5.5040001@veryxtech.com>
On Wed, Apr 12, 2017 at 06:21:01PM +0530, Karthikraj palanichamy wrote:
> Hi,
>
> I am using I350 card. The API rte_eth_dev_info_get() updated the parameter
> 'max_rx_pktlen' in 'struct rte_eth_dev_info' as 16384.
>
> But when I try transmission with multiple segments, I could not transmit
> more than 9732 bytes.
>
> I tried with testpmd and getting the same results.ie) couldn't transmit more
> than 9732 using testpmd.
>
> Is this a limitation or am I missing anything?
>
> Note : I tried with X540 card. I got 'max_rx_pktlen' as 15387 and I could
> transmit and receive upto 15387.
>
> Thanks
> Karthik
>
It seems the info returned may be wrong. According to the i350
datasheet [1], table 1-2, the max frame size supported by the i350 is
9.5k which roughly tallies with what you are seeing.
Regards,
/Bruce
[1] http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/ethernet-controller-i350-datasheet.pdf
next prev parent reply other threads:[~2017-04-12 13:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-12 12:51 Karthikraj palanichamy
2017-04-12 12:59 ` Karthikraj palanichamy
2017-04-12 13:01 ` Bruce Richardson [this message]
2017-04-12 13:04 ` Bruce Richardson
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